I am new to this type of help as I have always managed to figure out my computer problems before, but this one has me stumped. I am not a computer expert, so please be patient. Thanks.
Now, to the problem:
I am getting the following error when I try to launch several applications:
[Menu bar =] McAfee SecurityCenter: mcshell.exe - Bad Image
[error text =] The application or DLL C:\WINDOWS\System32\MFC42.DLL is not a valid Windows image. Please check this against your installation diskette
Or similar messages for other applications.
I also cannot get to task manager anymore. When I hit Ctrl-Alt-Delete, a DOS type command box opens but nothing happens.
Things I have tried:
I went to the Symantec free virus scan site but it will not run. I went to the Kaspersky free virus scan site and it ran for 15 hours and found no virus at all. I replaced my web based internet protection suite from Norton to McAfee because my internet provider (ATT Yahoo) switched it so I could not update my old Norton one. I ran chkdsk because I was getting an error on the systray to do so, but it did not help - however, I am no longer getting the error, so maybe it did a little.
Ok, sorry for being long winded... don't know how much detail you need to help. Thanks for anything you can do ... I have run out of ideas.